CN204042030U - A kind of butterfly valve automatic compensation sealing is secondary - Google Patents
A kind of butterfly valve automatic compensation sealing is secondary Download PDFInfo
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- CN204042030U CN204042030U CN201420469003.5U CN201420469003U CN204042030U CN 204042030 U CN204042030 U CN 204042030U CN 201420469003 U CN201420469003 U CN 201420469003U CN 204042030 U CN204042030 U CN 204042030U
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Abstract
It is secondary that the utility model relates to a kind of butterfly valve automatic compensation sealing, and comprise butterfly plate sealing surface and sealing surface of seat, butterfly plate sealing surface is metallic sealing section; Mainly sealing surface of seat is that U-shaped elastic soft sealing seat made by polymer material, this U-shaped elastic soft sealing seat is fitted on valve body by pressure ring, the U-shaped opening of U-shaped elastic soft sealing seat is towards pressure ring direction, and the inner ring surface of U-shaped elastic soft sealing seat is shaped with the sealing surface cooperatively interacted with butterfly plate sealing surface; Pressure ring is shaped with annular groove, and inside and outside annular groove, both sides are shaped with internal shoulder and outer convex shoulder; Evagination shoulder end face top is pressed on the U-shaped bottom surface of U-shaped elastic soft sealing seat, has gap between the radial ringed table top of internal shoulder end face and U-shaped elastic soft sealing seat.The elastic force of U-shaped elastic soft sealing seat carries out auto-compensation to the wearing and tearing of sealing pair, and increases reverse sealing force, and two way sealed performance is good.
Description
Technical field
The utility model belongs to valve field, specifically about the sealing pair of soft sealing butterfly valve.
Background technique
Soft sealing butterfly valve generally adopts soft seal sealing surface of seat and butterfly plate metallic sealing section to cooperatively interact composition sealing pair, and soft seal sealing surface of seat generally adopts rubber seal to be fitted in valve channel by pressing plate to form.Or adopt and rubber seal and valve seat metallic sealing section are installed on butterfly plate cooperatively interact composition sealing pair.Its shortcoming is in butterfly plate opening-closing process, there is larger frictional force in rubber seal and metallic sealing section, large to rubber seal wearing and tearing, and the seal pressure under the effect of reverse media pressure between metallic sealing section and rubber seal declines obviously, two way sealed poor performance.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, the butterfly valve automatic compensation sealing pair providing a kind of rubber seal to wear and tear little, sealing surface auto-compensation, two way sealed performance are good.
The technical solution of the utility model comprises butterfly plate sealing surface and sealing surface of seat, and butterfly plate sealing surface is metallic sealing section; Mainly sealing surface of seat is that U-shaped elastic soft sealing seat made by polymer material, this U-shaped elastic soft sealing seat is fitted on valve body by pressure ring, the U-shaped opening of U-shaped elastic soft sealing seat is towards pressure ring direction, and the inner ring surface of U-shaped elastic soft sealing seat is shaped with the sealing surface cooperatively interacted with butterfly plate sealing surface; Pressure ring is shaped with annular groove, and inside and outside annular groove, both sides are shaped with internal shoulder and outer convex shoulder; Evagination shoulder end face top is pressed on the U-shaped bottom surface of U-shaped elastic soft sealing seat, has gap between the radial ringed table top of internal shoulder end face and U-shaped elastic soft sealing seat.
In above technological scheme, the outer ring surface of U-shaped elastic soft sealing seat is shaped with radial ringed convex shoulder, and this radial ringed convex shoulder press-fits and between pressure ring and valve body radial end face.
The utility model beneficial effect is compared with prior art that the internal ring wall between the sealing surface of the inner ring surface of U-shaped elastic soft sealing seat and U-shaped groove has elasticity, sealing force when this elastic force increase butterfly plate sealing surface and U-shaped elastic soft sealing seat are sealed and matched, reduce sealing surface wear, auto-compensation is carried out to the wearing and tearing of sealing pair, and when reverse media pressure, medium pushes the sealing surface of U-shaped elastic soft sealing seat inner ring surface to butterfly plate sealing surface, and increase reverse sealing force, two way sealed performance is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Butterfly valve automatic compensation sealing is as shown in Figure 1 secondary, comprise butterfly plate sealing surface 2 and sealing surface of seat 4, butterfly plate sealing surface 2 is metallic sealing section: sealing surface of seat 4 makes U-shaped elastic soft sealing seat for polymer material, this U-shaped elastic soft sealing seat is fitted on valve body 1 by pressure ring 3, the U-shaped opening of U-shaped elastic soft sealing seat is towards pressure ring 3 direction, the inner ring surface of U-shaped elastic soft sealing seat is shaped with the sealing surface cooperatively interacted with butterfly plate sealing surface 2, make sealing surface and butterfly plate sealing surface 2 resilient engagement of U-shaped elastic soft sealing seat, improve the seal pressure of sealing pair, the wearing and tearing of automatic compensation sealing pair, pressure ring 3 is shaped with annular groove, and inside and outside annular groove, both sides are shaped with internal shoulder 5 and outer convex shoulder 6, outer convex shoulder 6 end face top is pressed on the U-shaped bottom surface of U-shaped elastic soft sealing seat, U-shaped elastic soft sealing seat is fixedly press-fited between pressure ring 3 and valve body 1, between the radial ringed table top of internal shoulder 5 end face and U-shaped elastic soft sealing seat, there is gap, make U-shaped elastic soft sealing seat sealing surface have elastic movement space and to U-shaped elastic soft sealing seat sealing surface move axially carry out spacing.
The outer ring surface of U-shaped elastic soft sealing seat is shaped with radial ringed convex shoulder, and this radial ringed convex shoulder press-fits between pressure ring 3 and valve body 1 radial end face, improves the stability that U-shaped elastic soft sealing seat is fixing between valve body 1 and pressure ring 3.
Claims (2)
1. a butterfly valve automatic compensation sealing is secondary, and comprise butterfly plate sealing surface (2) and sealing surface of seat (4), butterfly plate sealing surface (2) is metallic sealing section; It is characterized in that sealing surface of seat (4) makes U-shaped elastic soft sealing seat for polymer material, this U-shaped elastic soft sealing seat is fitted on valve body (1) by pressure ring (3), the U-shaped opening of U-shaped elastic soft sealing seat is towards pressure ring (3) direction, and the inner ring surface of U-shaped elastic soft sealing seat is shaped with the sealing surface cooperatively interacted with butterfly plate sealing surface (2); Pressure ring (3) is shaped with annular groove, inside and outside annular groove, both sides are shaped with internal shoulder (5) and outer convex shoulder (6): outer convex shoulder (6) end face top is pressed on the U-shaped bottom surface of U-shaped elastic soft sealing seat, have gap between the radial ringed table top of internal shoulder (5) end face and U-shaped elastic soft sealing seat.
2. butterfly valve automatic compensation sealing according to claim 1 is secondary, and it is characterized in that the outer ring surface of U-shaped elastic soft sealing seat is shaped with radial ringed convex shoulder, this radial ringed convex shoulder press-fits between pressure ring (3) and valve body (1) radial end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469003.5U CN204042030U (en) | 2014-08-15 | 2014-08-15 | A kind of butterfly valve automatic compensation sealing is secondary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469003.5U CN204042030U (en) | 2014-08-15 | 2014-08-15 | A kind of butterfly valve automatic compensation sealing is secondary |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204042030U true CN204042030U (en) | 2014-12-24 |
Family
ID=52242698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420469003.5U Active CN204042030U (en) | 2014-08-15 | 2014-08-15 | A kind of butterfly valve automatic compensation sealing is secondary |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204042030U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587869A (en) * | 2016-03-01 | 2016-05-18 | 天津自阀流体控制有限公司 | Double-scraper diaphragm butterfly valve |
-
2014
- 2014-08-15 CN CN201420469003.5U patent/CN204042030U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587869A (en) * | 2016-03-01 | 2016-05-18 | 天津自阀流体控制有限公司 | Double-scraper diaphragm butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180301 Address after: 325102 Sanjiang Industrial Park, Yongjia County, Wenzhou, Zhejiang Patentee after: Zhejiang Bethel science and Technology Co., Ltd. Address before: 325102 Zhejiang province Yongjia County Oubei Town East Industrial Zone Patentee before: Boteli Valve Group Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325102 Sanjiang Industrial Park Yongjia County Wenzhou city Zhejiang Province Patentee after: Zhejiang bertley Technology Co.,Ltd. Address before: 325102 Sanjiang Industrial Park Yongjia County Wenzhou city Zhejiang Province Patentee before: ZHEJIANG BOTELI VALVE Group |
|
| CP01 | Change in the name or title of a patent holder |